Restore Your Truck’s Brain and Banish Electrical Gremlins
Are you tired of chasing bizarre electrical issues in your GM truck or van? Flickering dashboard lights, power windows with a mind of their own, or a security system that randomly acts up? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s comfort and convenience features, a faulty BCM can make your reliable workhorse feel unpredictable. This isn’t just a replacement part; it’s a direct solution, pre-programmed to your vehicle’s specific VIN to restore function and peace of mind.
We take the guesswork and the expensive trip to the dealership out of the equation. Simply provide your VIN at checkout, and our technicians will flash this module with the latest GM software for your exact vehicle. This ensures seamless integration and proper operation right out of the box. This is the most efficient way to get your truck or van back to factory-spec performance without the high cost of dealer programming.
A Technician’s Notebook: The Case of the Haunted Silverado
Just last month, a 2006 Silverado 2500 was towed into my bay. The owner was at his wit’s end. The radio would turn on and off, the dome light would flicker while driving, and worst of all, the ‘Service Theft System’ message would pop up, occasionally causing a no-start condition. He’d already replaced the battery and checked the grounds. After connecting my scan tool, I saw a slew of communication error codes pointing away from the engine and toward the body systems. Experience told me to look straight at the BCM. Water intrusion from a leaky windshield seal had caused corrosion on one of the main connectors. By installing a pre-programmed 2003–2007 GM BCM like this one, we resolved all the phantom electrical issues in one shot. The truck was back on the road the same afternoon, saving the customer hundreds compared to a dealership repair.
Is Your GM Truck or Van Showing These Signs?
A failing BCM can cause a wide range of frustrating symptoms. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Erratic interior or exterior lights (flickering, staying on, or not working at all)
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all
- ✔ The security or anti-theft system malfunctioning, causing no-start conditions
- ✔ The horn honking unexpectedly or not working when pressed
- ✔ Dashboard warning lights that have no apparent cause (after ruling out other issues)
- ✔ Inconsistent or non-functional remote keyless entry
Your Straightforward BCM Installation Guide
For the confident DIYer or professional mechanic, swapping the BCM is a manageable job. This pre-programmed module makes the process much simpler.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most Silverado and Sierra pickups, the BCM is located under the driver’s side of the dashboard, near the steering column. For Express and Savana vans, it’s typically found behind the center dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring each one clicks firmly into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, windows, locks, wipers, etc.
Critical Post-Installation Procedures
Important: After installing your new 2003–2007 GM BCM, two final steps are often required to ensure full system functionality and safety. These procedures require a professional-grade diagnostic scan tool.
- Airbag System Reset: To clear the airbag warning light, the ‘Setup SDM Primary Key in BCM’ procedure must be performed. This re-establishes communication between the BCM and the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Sensor Relearn: Some vehicles may require a recalibration of the brake pedal position sensor. This is crucial for the proper function of the anti-lock brake and stability control systems.
Note: If you are not equipped to perform these relearn procedures, we strongly recommend seeking assistance from a qualified professional technician.
Verified Vehicle Compatibility
This module is a direct replacement for several part numbers, including 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is guaranteed to fit the following vehicles with the specified options:
Chevrolet/GMC Express/Savana 1500/2500/3500 Vans: 2003 (Center Dash)
Chevrolet/GMC Express/Savana 1500/2500/3500 Vans: 2004-2007 (Center Dash, w/o commercial tradesman package)
Chevrolet Silverado & GMC Sierra 1500 Pickups: 2003-2006 (Under steering column, exc. Crew Cab)
Chevrolet Silverado & GMC Sierra 1500 Pickups: 2007 (Classic style, creased door skin, under steering column, exc. Crew Cab)
Chevrolet Silverado & GMC Sierra 2500/3500 Pickups: 2003-2005 (Under steering column, exc. Crew Cab)
Chevrolet Silverado & GMC Sierra 2500/3500 Pickups: 2006 (Under steering column, AT 4-speed or MT, exc. Crew Cab)
Chevrolet Silverado & GMC Sierra 2500/3500 Pickups: 2007 (Classic style, creased door skin, under steering column, AT 4-speed or MT, exc. Crew Cab)
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No! This is the biggest benefit. We program the module to your vehicle’s VIN before we ship it to you. It arrives ready for installation and the final relearn procedures.
How do I provide my VIN number?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we receive this information.
Where is the BCM located on my truck?
For 2003-2007 Silverado and Sierra pickups, it’s typically found under the driver’s side dashboard. On Express and Savana vans from the same era, it’s usually behind the center instrument panel bezel.
Will this fix a ‘Service Theft System’ warning?
In many cases, yes. The BCM is integral to the Passlock/Passkey anti-theft system. A failing BCM is a very common cause of this warning and related no-start issues.
What tools are required for the post-installation steps?
The airbag system reset and brake pedal relearn require a bidirectional, professional-level scan tool (like a Tech 2, Snap-on, Autel, etc.) that can perform module setup procedures. A standard code reader cannot perform these functions.
Is this a new or used part?
This is a high-quality, tested, and verified used component that has been expertly programmed with the latest stable software for your vehicle, ensuring reliable performance.